Device for measuring fractional-order optical vortex topology charge values and measuring method thereof
A technology of topological charge and order optics, which is applied in the field of devices for measuring the topological charge value of fractional optical vortex
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[0050] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0051] according to figure 1 Structural layout of the measurement optical path diagram; As can be seen from the accompanying drawings, a device for measuring the topological charge value of the fractional optical vortex includes a continuous wave laser 100, and a collimated beam expander is arranged in sequence in the direction of the beam advance of the continuous wave laser 100 Device 110, Gaussian-top hat beam converter 120, polarizer 131, beam splitter 140; after beam splitter 140, the laser beam is divided into transmitted light and reflected light, and the transmitted light and reflected light form an angle of 90° , the transmitted light is irradiated on the spatial light modulator 150 as a reference beam; the reflected beam is irradiated on the mirror 220, and the mirror 220 is installed on the piezoelectric cera...
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